Monitoring Regional Oxygen Saturation - Casecag.com

Relevant Comparative Variables:SaO 2 , SpO 2 , TiPO 2 , SvO 2 , SjvO 2 vs. rSO 2SaO 2 - Systemic arterial oxygen availabilitySpO 2 - Depends on pulsatile blood flow and measures only theoxy-Hb in arterial blood as it leaves the heartTiPO 2 - Partial pressure of O 2 in cerebral tissueSvO 2 - Mixed venous saturationSjvO 2 – Jugular venous saturationrSO 2 – A venous weighted value (75% venous:25% arterial)that measures the regional relative concentrations of oxy-Hband deoxy-Hb; it represents the venous reserve capacityfollowing tissue oxygen extraction2010 Avery EG, White paper; Marin and Moore. Understanding Near-Infrared Spectroscopy. Advances in Neonatal Care. Vol 11,No 6, pp 382-388